Hello I have an issue with an Xbox in that the NAT settings keep changing from open to strict randomly from time to time when I log into games online.I have assigned a static IP to the XBox. I'm using the Technicolour telecom modem. I can assign the MAC address in the game area but I don't know what else to change. Or maybe I need a different router.I'm thinking about a Zyxel P2612HW-F1 or thereabouts.ThanksFord